Otto Matta is a regular 12 year old boy, who is thrown into the world of time traveling on his first day of Junior High School. After a tragic event, he learns that his seemingly regular Grandfather is actually a member of the secret Time Tree Society, a group of time travelers that direct the course of history. Otto is hunted through time by the nefarious Tito Feldspar, a time traveler intent on taking over the Time Tree Society. Otto's ingenuity and character are tested time and again. If he passes the test, he will save the world, if he doesn't, we will all be lost in the Time Tree.